Lesson 7

Multiplication Strategies for Larger Numbers

Est. Class Sessions: 2

Daily Practice and Problems

Teacher Notes
X

TIMS Bit

Use this DPP item to practice using a doubling strategy for the multiplication facts for the 2s.

    1. 12
    2. 24
    3. 24
    1. 14
    2. 28
    3. 28
    1. 16
    2. 32
    3. 32
    1. 24
    2. 48
    3. 48

One strategy for multiplying a number by 4 is to multiply first by 2. Then, double the answer. These problems are designed to help students see this pattern. Ask students if they have other patterns for finding the answers to these fact problems.

U. Doubles

    1. 2 × 6 =
    2. 12 + 12 =
    3. 4 × 6 =
    1. 2 × 7 =
    2. 14 + 14 =
    3. 4 × 7 =
    1. 2 × 8 =
    2. 16 + 16 =
    3. 4 × 8 =
    1. 2 × 12 =
    2. 24 + 24 =
    3. 4 × 12 =

What patterns do you see? Describe a strategy for multiplying a number by 4.